AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which type of body parts/structures serve similar functions, but do not share similar structure and development (example:bat wings and butterfly wings both used for flight)
A
Homologous Structures
B
Vestigial Structures
C
Analogous Structures
Explanation: 

Detailed explanation-1: -Analogous structures, as pointed out earlier, are structures having a similar or corresponding function but the two species under probe should not share the same evolutionary origin. The forelimbs of mammals, such as humans and bats, are homologous structures.

Detailed explanation-2: -Bird and bat wings are analogous-that is, they have separate evolutionary origins, but are superficially similar because they have both experienced natural selection that shaped them to play a key role in flight. Analogies are the result of convergent evolution.

Detailed explanation-3: -No, wing of bat and wings of butterfly should not be considered as homologous organs because they have different structure and origin but have the same function of flying so they are analogous organs.

Detailed explanation-4: -Analogous organs are those organs that have some superficial resemblance, perform similar functions and yet, have different evolutionary origins and hence, different anatomical structures.

Detailed explanation-5: -What Are Analogous Structures? Analogous structures are similar structures in unrelated organisms. These structures are similar because they do the same job, not because they share common ancestry. For example, dolphins and sharks both have fins, even though they aren’t related.

There is 1 question to complete.